M40FA640A/A
Contents
1. g 4 91 2 LA 4 69 G VOOV OTIA T vs 2 Qt nuns g 11g Ji m e open HO1V1S ONIQNIAA NIV Sa qp oe e 21 801 E OhNTISDhV OLNSWID 1OMV 081 t1 in ZH 09 390198 SHL N3dO NOILVH3dO ZH 09 ZH 09 31NOd 1I 2 09 V OLN3IN NOIZN TH 11 dad Issued 04 2010 10 SIN NT 015 6 M40FA640A A ENGLISH e MarelliGenerators ITALIANO 12 TERMINALS OVER EXCITATION DEVICE 2H 09 390199 JHL N3dO NOLLVd2 dO zH 09 2 09 31NOd ll 09 V OLNAWYNOIZNN 11 H3d tqv 390188 JHL N3dO 10 THTTVEVd gv OTISOLLNOd 71 HOLYNYSLTY HLT NOO O7T3TTIVHVd NI 22 111 Bad 2H 09 3001989 JHL N3dO NOLLvH3dO ZH 09 HOS ZH 09 31NOd 1l 8 17 09 V OLNSWWNOIZNN H3d dod 19 O3 Tivuvd xL NOLLV LIOXSHSAO 1 1 3NOIZV LIOO2VBAOS IG v L NNOO TYNYSLDG INH321S83 TOO O Gmm M or e RR roe SLUHM OS l Wasa 77 iS Ld LOVINOD O N OW OLLVINOO LA A OE 9A 9n nf HOLV LS en 1 15 STATORE ECCIT STATOR EXCIT Issued 04 2010 11 SIN NT 015 6 M40FA640A A ENGLISH e MarelliGenerators ITALIANO2. limiter time delay the over excitation limiter steps down the excitation voltage to the threshold value Limiter time delay depends on the amount of the over load more the over load arisen quicker the limiter action Limiting the excitation voltage the generator excitation level decreases partially or totally depending on the over load occurred In case of excitation shutdown due to the limiter the de excitation condition could be not maintained WARNING Even if correctly set this device does not substitute external systems protections it is only a completing device WARNING in case of generator paralleled with the grid an over excitation condition detected by the limiter can lead to a generator excitation shutdown with risk of loss of synchronism LIMITER SETTING for a quicker limiter setting it is possible to momentarily disable the time delay by means of the micro switch 3 see also the next paragraphs In order to properly set the limiter please apply the following procedure when the generator is running at the rated speed apply the maximum desired load select position OFF for the micro switch 3 Carefully rotate counter clockwise the potentiometer AMP until the yellow LED lights up and the generator voltage decreases to a stable value lower than the rated voltage carefully rotate clockwise AMP until the yellow LED switches off the generator voltage must recover the rated value select p
3. lt lt NIYIN 0 Q Oa ONIGINIAA 3 vdlONIHd 16 OltiVITISriV OANGINIOIOAAV 9 35ui88 JHL N3dO N3O tHdH1O HLIM NOl2VH34dO T3TTIVuvd t amp v OTISOLLNOd 1 3uiddv IHOIVNUAETV O THTIVHYd NI OZZNILN Q3AOW3U 38 OL 3AVH A V S IVNIWH31 ZH 09 N33AJ38 3HL NOILLVH3dO ZH 09 190 ZH 09 LL 3S8OW Vel OTISDILNOd 1 1 09 V OLNSWVNOIZNI TI H3d Issued 04 2010 13 SIN NT 015 6 M40FA640A A MarelliMotori overseas offices GREAT BRITAIN CENTRAL EUROPE Marelli UK Ltd Marelli Central Europe Gmbh Meadow Lane Heilswannenweg 50 Loughborough 31008 Elze Germany Leicester T 49 5068 462 400 LE 11 1NB UK F 49 5068 462 409 T 444 1509 615518 germany marellimotori com F 44 1509 615514 uk marellimotori com USA Marelli USA Inc 1620 Danville Road PO Box 410 Harrodsburg KY 40330 USA T 1 859 734 2588 F 1 859 734 0629 usa marellimotori com MarelliMotori Marelli Motori S p a Via Sabbionara 1 36071 Arzignano VI Italy T 39 0444 479711 F 39 0444 479888 www marellimotori com sales marellimotori com er MarelliService 39 0444 479775 F 39 0444 479757 service marellimotori com ASIA PACIFIC Marelli Asia Pacific Sdn Bhd Lot 7 Jalan Majistret U1 26 Hicom Glenmarie Industrial Park 40150 Shah Alam Selangor D E Malaysia T 60 3 7805 37
4. 36 F 60 3 7803 9625 asiapacific marellimotori com MARELLI MOTORI reserves the right to change the design technical specification and dimensions in order to update or improve its products without prior notice SOUTH AFRICA Marelli Electrical Machines South Africa Pty Ltd Unit 4 55 Activia Rd Activia Park Elandsfontein 1406 Gauteng Republic of South Africa T 27 11 822 5566 F 27 11 828 8089 southafrica marellimotori com
5. 6 TERMINALS OVER EXCITATION DEVICE ANOISN3SL 88 Qs O Lv LSOzti LOW NNOO TVNH3IX3 INBZIS3 NNOO TvNH3aLNI INJILNI SLIHM OONVIa ZHHAA OONNVIG 3adavoTivio N3 3H9 MOTT3A INEST e pp p s E ndi NN J Vt liH dv LAA YOLVLS NVA 3 vdlONIHd Z3Oolivilis STATORE ECCITAZIONE STATOR EXCITER AHL NAdO H3HLO HHM T43TIvaHvd HOS gv OTISZ0LLNOd 1 3tltHdV IHOLvNH3LETV 1 Omivasvd NI OZZMILN Yad GSAQOWSY OL HAVH JO STIVNIWNHAL ZH 09 N33 AA 138 3 9lH8 3HL NOLLVH3dO ZH 09 HOS 138 ZH 09 LLEJSHON I Vel OTISOLLNOd Tl 09 v OLN3INVNOIZNID Tl Issued 04 2010 12 SIN NT 015 6 M40FA640A A ENGLISH e MarelliGenerators 6 TERMINALS AUX WINDING ITALIANO ANOISNAL OSH ponia OLVISO3H mm LOW NNOO TVNH31X3 INH31S3 NIOO NNOO TVNH3LNI INHZLNI NAAOUB SNOHHVIN MOV 1H OuaN 3LIHAA OONVIS SLIHM OONVIE 3LIHAA OONVIS SLIHM OONVIE N33B8C MO TI3A EE E ui VOPOV JOPIA T 9 C LYHYIN HAV ORO HOLVIS MEV 10H 2
6. LD RESISTANCE INPUT OUTPUT DATA SUPPLY VOLTAGE POWER SUPPLY POWER DISSIPATED VOLTAGE SENSING OUTPUT VOLTAGE DO OUTPUT CURRENT DC OUTPUT CURRENT DC SIN NT 015 6 M40FA640A A ENGLISH APPLICATION The voltage regulator type MARK is suitable for Synchronous Generators of MARELLI MOTORI make MJB series size range 160 500 frames This regulator is proper to operate on machines rated from 10 up to 2000 The regulator is fully insulated in order to maintain high reliability also with severe ambient conditions high level of humidity dust salt atmosphere and in case of high vibrations level The regulator is proper both for single and 3 phase operation 1 cycle a regime per valori di tensione e carico nominali steady state conditions for rated Voltage and PF variazione di tensione per variazione Tamb 50 C of voltage change for 50 C T amb change 20ms 16 6ms 300 706 3 5Q min 20Q max 170 277V 50 60Hz 1000 VA max 30 W max 170 270 380 415 440 480 V Three or Single Phase Sensing 80V 8A max servizio continuo max servizio continuo max continuous max in forzamento 1 minuto max 1 minute forcing Issued 04 2010 ENGLISH e MarelliGenerators VOLTAGE REGULATOR M40FA640A A MARK I STAB SLOPE PAR 989 micro switches 1 4 LED 56 55 S4 53 52 51 11111111111 Three phase Varicomp vol
7. M40FA640A A Mark User Manual Automatic Voltage Regulator for Three phase Synchronous Generators Issued 04 2010 e MarelliGenerators Instruction Manual Installation Operation Maintenance MARELLI AVR M40FA640A hanada technology Co Ltd e MarelliGenerators INTRODUCTION This Technical Note provides general installation and operating information exclusively concerning the Marelli Motori regulator code specified in the document mounted on the Marelli Motori synchronous generators specified in the next paragraph APPLICATION Before the generator start and any types of regulation operation read carefully and completely this Technical Note IMPORTANT NOTE It is not the intention of this document to cover all the installation or connection diagram variations nor does this manual provide information for every possible contingency The connection drawings provided with the generator the generator user manual and all the technical information provided by Marelli Motori Technical Personnel can integrate this Note In particular the connection drawings into this document are provided only for explanation purposes They do not cover all the application cases and not substitute the connection drawings usually provided with the generator Should further information be required please contact After Sales Department see the reference at the end of the page SAFETY PRECAUTIONS WARNING
8. ator it is necessary to act on the potentiometer STAB for fine setting of stability An additional coarse setting of stability can be achieved by means of the micro switches number 1 e 2 DROOP KIT DEVICE The device is included in the voltage regulator to allow parallel operation between similar generators the device permits to share correctly the total reactive power required by the load among all generators operating in parallel The device is composed by an external current transformer which senses the current in phase W and the internal droop circuit of the regulator The is placed on phase W the phases U and V have to be connected to terminals 51 and 52 The voltage regulator is provided with input terminals terminals A and B for easy connection to an external current transformer Such terminals are normally shorted by a connection bridge when the generator is used in single operation If the voltage is increasing as the load increases it is necessary to reverse the leads of the current transformer at the terminals A B SIN NT 015 6 M40FA640A A ENGLISH Issued 04 2010 e MarelliGenerators OVER EXCITATION LIMITER This function permits to limit the over excitation due to particular load conditions that could cause the generator damage As soon as the excitation voltage rises over a certain threshold set by means of the potentiometer AMP for a time larger than the
9. e toglie il tempo di intervento della limitaz Only for quick setting of the excitation limiter it permits to disable the normal limiter time delay Micro switch 4 OFF Protezione bassa frequenza con pendenza tarabile fare anche riferimento al potenz SLOPE Low speed protection with V f slope adjustment see SLOPE potentiometer FUSE The voltage regulator is provided with an internal protecting fuse which acts in case of faults on the regulator or very large overloads on exciter circuit EMI SUPPRESSOR The AVR is provided with an internal Electromagnetic Interference filter this interference suppression system permits to obtain compliance with relevant EMC standards on MARELLI MOTORI generators SIN NT 015 6 M40FA640A A 9 Issued 04 2010 ENGLISH e MarelliGenerators 12 TERMINALS AUX WINDING 3NOISN3L O3H 191503 Lr LLL 108 L re r 7 NNOO NNH3SIXS INH3IS3 02 NNOO TVNH3INI INB3INI 1109 d e dd IM TA En NAAOta 3NOHBVIA _ O MOV I E OH32N GAA SA sn CI3H OSSOH 1 O 0 O ZM ZA zn l O O L oM A A 00 BLIHAA OON VISI Ei E T SJLIHM OONVIS N33H AOTI3A 11912 2 1 s X T Vi PPT ELE r tp 7 ATE P
10. ency of intervention AMP potentiometer to change the over excitation limiter it permits to set the excitation voltage threshold of the over excitation limiter The default setting of this potentiometer is at the maximum excitation voltage threshold increases the over excitation threshold STAB potentiometer to change stability by rotating it clockwise stability increases but response time becomes larger C gt increases response time increases stability SLOPE potentiometer to change the low speed protection characteristic slope with the micro switch 4 OFF this potentiometer allows to increase or decrease the under speed ramp slope and set the voltage droop for a fixed reduced speed C decreases the voltage droop for a fixed frequency intervention PAR potentiometer to change the droop This potentiometer allows to change the voltage droop in load conditions the droop increases SIN NT 015 6 M40FA640A A ENGLISH Issued 04 2010 ITALIANO ENGLISH e MarelliGenerators USE OF MICROSWITCHES To change the stability characteristics of the regulator it is possible to use the micro switches In such a way it is possible obtain changes in the transient response of the regulator Micro switch 1 ON ES Transient response becomes faster Micro switch 2 ON Transient response becomes faster Micro switch 3 5 ON m OFF Solo per taratura rapida limitazione di sovraeccitazion
11. in excitation SIN NT 015 6 M40FA640A A ENGLISH Issued 04 2010 e MarelliGenerators The analogue input is usually used for the voltage regulator control by means of the Marelli power factor regulator for parallel operation with the grid This input can be also connected to external devices not made by Marelli for remote control of the generator voltage or the excitation during parallel operations voltage matching and power factor regulation as long as those devices were equipped with suitable outputs insulated outputs and voltage range not higher than 3Vdo WARNING in the case of parallel with the grid and voltage regulator controlled by an external device by means of the analogue input pay attention to the analogue input voltage value after the load rejection In this particular case in order to avoid any dangerous generator over voltages the voltage value between the terminals 6 and 8 must be reduced to OVdc or to any values leading to a generator voltage not exceeding the rated 596 STABILITY SETTING The voltage regulator is provided with internal adjustable stability circuits in order to allow operation in a wide range of applications The stability of the regulator can be set on field to adapt it to the characteristics of the plant and or the driving engine diesel engine water turbine gas turbine in order to obtain the best voltage response To change the stability characteristics of the regul
12. n such trimmer it is possible to obtain a voltage regulation of about 5 around the nominal voltage By using a 200kOhm potentiometer it is possible to obtain a voltage regulation of about 10 9 The trimmer is connected anyway through the regulator to the output of the generator and then it represents a live part UNDERFREQUENCY LIMITER The regulator is provided with internal circuits in order to reduce the excitation when running at low speed in order to avoid damages to the excitation system of the generator i e to the regulator to the exciter field to the rotating rectifier main rotor The potentiometer FREQ fixes the corner frequency that is the frequency at which the limiter operates Below that particular frequency red LED switches on and the voltage of the generator reduces further with speed reduction By setting the micro switch nr 4 in OFF position the voltage reduction is smaller and is close to be proportional to the speed reduction voltage reduction is settable by the potentiometer SLOPE ANALOGUE INPUT The AVR accepts a voltage analogue input of 3Vdc maximum to control the exciter field of the generator This input has to be applied to terminals 6 and 8 In case of single operation a maximum change of 3Vdc of the analogue input leads to a maximum change of 2596 of the generator voltage with respect to the rated generator voltage A value of 0Vdc does not lead to any change
13. osition ON for the micro switch If the procedure is properly carried out the excitation voltage threshold is set to a value 15 20 higher than the excitation voltage at the maximum desired load previously applied Time delay depends on the amount of the over load occurred it can range from 10s minimum to some minutes maximum SIN NT 015 6 M40FA640A A ENGLISH Issued 04 2010 e MarelliGenerators USE OF POTENTIOMETERS VOLT potentiometer to change the output voltage of the generator Normally the internal potentiometer VOLT allows possibility of adjusting the voltage in a wide range i e between 200 and 560 V to obtain a finer possibility of voltage setting or to adjust the voltage from the control panel or in order to limit the voltage range an external potentiometer can be connected to the terminal P and Q resistance about 100kOhm 500mW to obtain 596 voltage regulation increases voltage FREQ potentiometer to change the low speed protection usually it is set at the factory in order to reduce the excitation when speed becomes lower than 90 of rated speed at 50 Hz By removing the bridge which normally shorts the terminals Hz and 60 the speed protection acts properly for 60 Hz operation By acting on potentiometer FREQ it is possible to adjust further in case should it be necessary the frequency at which the low speed protection is effective decreases frequ
14. tage reference Supply Exciter stator TERMINALS Connection terminals are performed through FAST ON terminals The terminals have to be connected according the applicable wiring diagram in order to avoid any possible mistake in the wiring The use of FAST ON terminals makes any operation on regulator as replacement connection to accessories setting up extremely simple POWER STAGE INPUT TERMINALS U N terminals for power supply VOLTAGE SENSING INPUT TERMINALS S1 S2 S3 S4 55 56 are the terminals for three phase or single phase voltage sensing POWER OUTPUT TERMINALS output terminals positive DC and negative DC SIN NT 015 6 M40FA640A A 4 Issued 04 2010 e MarelliGenerators CONTROL TERMINALS Hz 60 terminals for changing the low speed protection terminals P Q terminals for connection of external trimmer 100kOhm 6 8 input terminals for connections of external control systems input for D C voltage 3 Vdc The terminal is to be used only case of special connections uL TERMINALS for interconnecting with over boosting excitation systems t output terminals positive DC and negative DC 9 voltage sensing EXTERNAL POTENTIOMETER At the terminals P and Q an external trimmer minimum rating 500mW resistance about 100kOhm can be connected By acting o
15. when the regulation device is N energized generator running a lethal voltage is present at the top panel connection side and at all the parts electrically connected to it Furthermore there are components into the card that can reach high working temperatures with high danger for the user in case of direct contact Every wiring and or mechanical installation N operation on the regulator must be performed only in generator stop conditions and only by skilled personnel Furthermore pay attention to wait a time interval sufficient for the device cooling down Every regulation setting operation must be N AN performed with generator running in no load conditions by skilled personnel using tools suitable to assure the user safety i e isolated screwdriver protection glasses and gloves Marelli Motori is under no liability for any damages which may occur to the AVR the plant or the persons or for lost earnings or financial loss or system stoppages due to missed out Technical Note reading both safety and installation operating instructions MarelliService AFTER MARKET DEPARTMENT MARELLI MOTORI S p A Tel 39 0444 479775 Fax 39 0444 479757 E mail service marellimotori com Web www marellimotori com SIN NT 015 6 M40FA640A A ENGLISH Issued 04 2010 e MarelliGenerators DATI TECNICI TECHNICAL DATA REGULATION ACCURACY VOLTAGE DRIFT RESPONSE TIME OPERATING TEMPERATURE EXCITER FIE
Download Pdf Manuals
Related Search
M40FA640A/A m40fa640a avr